Blaylock Sandstone

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Blaylock Sandstone
Stratigraphic range: Silurian
Type Formation
Unit ofnone
Sub-unitsnone
Underlies Missouri Mountain Shale
Overlies Polk Creek Shale
Thicknessup to 1200 feet [1]
Lithology
Primary Sandstone
Location
Region Arkansas, Oklahoma
Country United States
Type section
Named forBlaylock Mountain, Montgomery County, Arkansas
Named byAlbert Homer Purdue [2] [3]

The Blaylock Sandstone is a Silurian geologic formation in the Ouachita Mountains of Arkansas and Oklahoma. First described in 1892, [4] this unit was not named until 1909 by Albert Homer Purdue in his study of the Ouachita Mountains of Arkansas. [2] [3] Purdue assigned the Blaylock Mountain in Montgomery County, Arkansas as the type locality, but did not designate a stratotype. As of 2017, a reference section for this unit has yet to be designated.

Contents

Paleofauna

Graptolites

D. decussatus [5]
G. perlatus [5]
M. argutus [5]
M. distans [5]
M. gregarius [5]

See also

References

  1. ↑ McFarland, John David (2004) [1998]. "Stratigraphic summary of Arkansas" (PDF). Arkansas Geological Commission Information Circular. 36: 20–21. Archived from the original (PDF) on 2016-12-21. Retrieved 2018-01-09.
  2. 1 2 Purdue, A.H. (1909). Slates of Arkansas. Geological Survey of Arkansas. pp. 30, 35.
  3. 1 2 Purdue, A.H. (1909). "Structure and stratigraphy of the Ouachita Ordovician area, Arkansas (abstract)". Bulletin of the Geological Society of America. 19: 556–557.
  4. ↑ Griswold, L.S. (1892). "Whetstones and the novaculites". Annual Report of the Geological Survey of Arkansas for 1890. 3.
  5. 1 2 3 4 5 6 Miser, Hugh D.; Purdue, A.H. (1929). "Geology of the De Queen and Caddo Gap quadrangles, Arkansas". U.S. Geological Survey Bulletin. 808: 45.


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